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RT8048 Datasheet(PDF) 2 Page - Richtek Technology Corporation

Part # RT8048
Description  3MHz 1A Step-Down Converter
PDF  11 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT8048 Datasheet(HTML) 2 Page - Richtek Technology Corporation

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RT8048
2
DS8048-01
June 2011
www.richtek.com
Function Pin Description
Typical Application Circuit
VOUT (V)
L (
μH)
R1 (k
Ω)
R2 (k
Ω)
COUT (μF)
1.2
0.47
82
82
4.7
1.8
0.47
100
49.9
4.7
2.5
1
91
28.7
4.7
3.3
1
82
18
10
Table 1. Recommended Component Selection
VIN
LX
RT8048
EN
FB
VIN
VOUT
L
6
4
3
2
R1
R2
C1
GND
5, 7(Exposed Pad)
CIN
COUT
Figure 1. Adjustable Voltage Regulator
Figure 2. Fixed Voltage Regulator
VIN
LX
RT8048
EN
VOUT
VIN
VOUT
L
6
4
3
2
GND
5, 7(Exposed Pad)
CIN
COUT
Pin No.
Adjustable
Output Voltage
Fixed Output
Voltage
Pin Name
Pin Function
1
1
NC
No Internal Connection.
2
2
EN
Chip Enable (Active High).
3
3
VIN
Power Input.
4
4
LX
Switch Node.
5,
7 (Exposed Pad)
5,
7 (Exposed Pad)
GND
Ground. The exposed pad must be soldered to a large PCB and
connected to GND for maximum power dissipation.
6
--
FB
Feedback.
--
6
VOUT
Output Voltage.



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